The technology giant said on Monday that most users’ first iPhone was often one of their older, 10-centimetre sized devices, and lead to the creation of the SE, which is the same size as the 2013 iPhone 5s.

Apple chief Tim Cook said: “The iPhone is the most loved smartphone in the world, and today we are welcoming a new member to the family.”

Despite its smaller size and cheaper price – beginning at $US399 ($A524.52) – the SE will come with up-to-date specifications including a 12-megapixel camera and the ability to record video in 4K – four times that of HD.

A new iPad Pro, smaller at 24cm has also been announced, a similar size to the firm’s existing iPad Air line.

Apple’s Phil Schiller said the new device had the same display as the larger Pro, and also comes with a new light system called Night Shift, that lowers blue light for reading in the dark.

The display also has a display Apple is calling True Tone, which changes the colours on the screen depending on the light conditions it’s being used in.

The new, smaller iPad Pro also supports the smart keyboard and Apple Pencil stylus that are part of the larger Pro’s set-up.

The new iPad Pro also has the “most advanced” iPad Pro camera ever, a 12-megapixel lens – the same as the iPhone 6s.

It will be available in four colours, including rose gold, for the first time.

AAP